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Studies on the Potamidid snail Cerithidea (Cerithedeopsilla) cingulata (Gmelin,1790) (Mollusca : Mesogastropoda)

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Relation http://eprints.cmfri.org.in/6957/
 
Title Studies on the Potamidid snail Cerithidea (Cerithedeopsilla) cingulata (Gmelin,1790) (Mollusca : Mesogastropoda)
 
Creator Sreenivasan, P V
 
Subject Theses
Molluscan Fisheries
Gastropods
 
Description Among mesogastropods, Potamididae , which comes
uncier superfamily Cerithiacea. , forms an important constituent
in the molluscan fauna of estuarine and intertidal region.
At Porto NOvo, three species of this family belonging to
two genera, Cerithidea and Telescopium, are common. The
three spccies are different in their habit and habitats
forming their own micro- ecological units and without competing
with each other's territory. Their abundance in the
estuarine system is really fascinating. Particularly
Cerithidea (Cerithideopsilla) cingulata, is distributed in
the Vellar estuary more widely than the other two and reaches
an astonishingly very high number of 12000/ m2 and such
enormous density is paralleled only by Hydrobia sp. (Hunter,
1964), in the temperate estuaries . On the otherhand,
Telescopium tolescopium, the shell of which attains a very
large size of about 11 cm, occurs in comparatively lesser
numbers . Cerithidea (Cerithidea) obtusa is moderate in size
and its density also is moderate, never reaching more than
100/m2. C.(C.) cingulata prefers submersion and periodical
exposure, but C.(C.) obtusa prefers mainly exposure and
avoids submersion . on the otherhand, T.teleseopium takes
both submersion and exposure equally well. Thus, their
accommodation to each other physiological and
anatomical adaptations are matters of fascinating study .
 
Date 1985
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/6957/1/TH-60_Sre.pdf
Sreenivasan, P V (1985) Studies on the Potamidid snail Cerithidea (Cerithedeopsilla) cingulata (Gmelin,1790) (Mollusca : Mesogastropoda). ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Annamalai University.